1. Who invented Floppy disk ?

Answer: IBM in 1970

2. Who invented Piano ?

Answer:

Bartolomeo Cristofori

3. Who invented Atomic numbers ?

Answer: Moseley of Britain in 1913

4. Who invented Chloroform as anaesthetic ?

Answer: James Simpson of Britain in 1847.

5. Who invented Ball-Point Pen ?

Answer: John J. Loud of U.S.A. in 1888

6. Who invented Periodic table ?

Answer:

Dmitri Mendeleev invented Periodic Table

7. Who invented Vitamin C ?

Answer:

Scottish naval surgeon James Lind in 1747